Abstract
Titanium is widely used in specific applications due to its high strength, low density and good chemical stability. Despite it is one of the most abundant elements in the earth’s crust, it is very expensive, because production of pure metallic titanium is very complex. Kroll process is the way how most of the titanium is produced nowadays. Shortages of this process are that it is batch process and it is very energy exhaustive, because titanium sponge material after reduction reaction needs complex post processing to isolate pure titanium. In this work we describe and experimentally investigate technology for Ti production from titanium tetrachloride using combined Kroll and electroslag process. Such process allows to achieve better reaction product separation by molten slag and process can potentially be continuous, thus technological process to produce metallic titanium can be significantly shortened.
Highlights
Titanium is widely used in specific applications due to its high strength, low density and good chemical stability
The implementation of the Kroll process combined with the electroslag process in our proposed reactor design and verification of the theoretical and numerical calculations requires experimental studies, which are summarized
Experimental studies were started with studying the process of electroslag remelting of a titanium electrode to investigate Ti droplet filtration through the slag layer as electrode is gradually melting
Summary
Titanium is widely used in specific applications due to its high strength, low density and good chemical stability. Kroll process is the way how most of the titanium is produced nowadays Shortages of this process are that it is batch process and it is very energy exhaustive, because titanium sponge material after reduction reaction needs complex post processing to isolate pure titanium. In this work we describe and experimentally investigate technology for Ti production from titanium tetrachloride using combined Kroll and electroslag process. Previous work demonstrates that electric heating allows to reach high temperature, melt slag and maintain environment for the reduction reaction for long time[21]. This technology is scalable because electric current allows to supply large heat density in the reactors of various sizes. ESR process in large size is described and used in industry[22]
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